<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <style>
    div {
      margin: 0;
      padding: 0;
    }
    body {
      background-color: #ccc;
    }
    .box {
      width: 500px;
      height: 500px;
      margin: 50px auto;
      border: 1px solid red;
    }
    .box div {
      position: relative;
    }
    .head {
      width: 250px;
      height: 125px;
      margin: 10px auto;
      background-color: darkgreen;
      border-radius: 125px 125px 0 0;
    }
    .head::before {
      content: '';
      position: absolute;
      top: 65px;
      left: 70px;
      width: 20px;
      height: 20px;
      background-color: #fff;
      border-radius: 50%;
    }
    .head::after {
      content: '';
      position: absolute;
      top: 65px;
      right: 70px;
      width: 20px;
      height: 20px;
      background-color: #fff;
      border-radius: 50%;
    }
    .body {
      width: 250px;
      height: 250px;
      margin: 0 auto;
      background-color: darkgreen;
      border-radius: 0 0 20px 20px;
    }
    .body::before {
      content: '';
      position: absolute;
      top: 20px;
      left: -40px;
      width: 30px;
      height: 180px;
      background-color: darkgreen;
      border-radius: 10px;
    }
    .body::after {
      content: '';
      position: absolute;
      top: 20px;
      right: -40px;
      width: 30px;
      height: 180px;
      background-color: darkgreen;
      border-radius: 10px;
    }
    .foot::before {
      content: '';
      position: absolute;
      top: 0;
      left: 175px;
      width: 30px;
      height: 90px;
      background-color: darkgreen;
      border-radius: 0 0 10px 10px;
    }
    .foot::after {
      content: '';
      position: absolute;
      top: 0;
      right: 175px;
      width: 30px;
      height: 90px;
      background-color: darkgreen;
      border-radius: 0 0 10px 10px;
    }
  </style>
</head>
<body>
  <div class="box">
    <div class="head"></div>
    <div class="body"></div>
    <div class="foot"></div>
  </div>
</body>
</html>